Hurricane Andrew was pretty devastating. And was $26 billion in damages in 1992 dollars, and is still the 4th costliest ever.
President GHW Bush worked with our Governor and everything went very smoothly.
Like I said: all that often. 23 years passed between Andrew and Katrina. For many American's, that's their whole life. Our institutional memory isn't that long.
Disaster responses are the domain of the states. They have the ultimate responsibility and not every state is as adept as the next one. It's just one of those "states rights" issues we have to deal with.
And, it's not just governments which can drop the ball or do things that make you scratch your head and say, "Huh?" Our SBC response to the High Park Fire in Larimer County, CO last year is a good example. The Colorado Baptist's don't have a very big disaster relief ministry (yet), so they called upon we Okies for assistance. We responded en masse and got a very good operation going there and at the Waldo Canyon fire near Colorado Springs (at the same time that we were also responding to fires in New Mexico and, shortly after, fires in Oklahoma). After a couple of weeks of diligent effort, we had the response running like a well-oiled machine and we turned it over to our California brothers to carry on.
You'd think the California crew would be the experts at managing a fire disaster, right? I mean...after all...who has more experience? Unfortunately, that didn't turn out to be the case. According to what I've heard from those who were there after the transition, they screwed it up royally.
The point is that disaster relief, whether from a government entity or an NGO is very much dependent upon the individuals involved and the institutional readiness to deal with it. Some people and organizations are very good at it. Regrettably, some are not. A lot of what we may perceive as problems in disaster management, the rules and regulations and contingency plans etc, are nothing more than attempts to standardize responses across the board and in every circumstance, to account for the differing levels of ability.
It will never be perfect because there are no perfect people to plug into critical positions.